Toots & Trots / Does it matter?
Sautéed onion or onion-infused oil — does it matter?
Cooking softens onion and reduces some of its irritation, but the fructans largely survive heat and stay in the cooked piece. Onion-infused oil skips the fructans entirely — they don't pass into fat — so you get the savoury flavour without the gas load. Most people find the infused oil a noticeably gentler choice.
Scores use a standard reference serving via the GASP model. Individual tolerance varies.
Yes — mainly because of gas.
If wind and bloating is a problem for you, Onion — infused oil is worth trying. If you're tolerating Onion — sautéed without issues, the difference may not show up for you personally.
Try it on your own food
These ideas are a starting point — see how your actual meals and foods score.
More comparisons
Where the scores come from
- The GASP model — Gas, Agitation, Stool-loosening, Particle load
- Monash University FODMAP program — fermentable carbohydrate thresholds
- USDA FoodData Central — nutrient composition data
Scores are our modelled synthesis — not endorsed by these organisations.
Written and checked from lived experience with a J-pouch. Last updated June 2026. The GASP Score is a modelled estimate, not medical advice — always work alongside your own clinical team.
Scores are modelled estimates, not medical advice. Everyone's gut is different, and tolerance changes over time. Reintroduce foods one at a time, and follow your own medical team's advice.